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AM335x IO pin as input issue

Dear Sir and Madam,

I am using Am335x for one of our products, there is an issue I concern as follows.

I am using some IO pins as inputs with 10Kohm pull-up resistor, but I found the high level is only 2.4V around, is it correct?

PC_SW1 connect to AM3352ZCZ_pin V12

Cancel_Call connect to AM3352ZCZ pin U16

High_Call connect to Am3352ZCZ pin V15

PC_SW2 connect to AM3352ZCZ pin V16

they are all config as

OMAP_MUX_MODE7 | AM33XX_PIN_INPUT_PULLDOWN   in board_am335xevm.c

Cheers,

Jason